TWI632496B - Touch structure - Google Patents

Abstract

A touch structure includes a bridge portion, a first Electrostatic Discharge (ESD) unit, an insulating layer, two first electrode units, and two second electrode units. The bridge portion and the first ESD unit are disposed on the substrate, and the first ESD unit has a first protruding portion. The insulating layer is disposed on the substrate, and has a first through hole and a second through hole corresponding to the bridge portion, wherein the bridge portion and the first ESD unit are located on the same side of the insulating layer. The two first electrode units are electrically connected to each other through a connection portion. The two second electrode units are electrically connected to the bridge portion through the first through hole and the second through hole, respectively. At least one of the two first electrode units and the two second electrode units extend to correspond to the first ESD unit. A second ESD unit, and the second ESD unit has a second protruding portion.

Description

Touch structure

The invention relates to a touch structure.

With the development of electronic product design becoming more user-oriented, considering the convenience of user operation, products using touch panels have gradually become the mainstream in the market, such as smart phones or tablet computers. Therefore, touch panels have become an important and indispensable part of consumer electronics. However, in use, the touch panel is often accompanied by an inevitable problem of damage by static electricity. When an electrostatic injury occurs, the electrodes or wiring in the touch panel may be disconnected due to the electrostatic injury, so that the touch panel may face a scrapped condition.

An embodiment of the present invention provides a touch structure including a bridge portion, a first ESD unit, an insulating layer, a first electrode unit, and a second electrode unit. Adjacent first electrode units can be electrically connected through the connection portion, adjacent second electrode units can be electrically connected through the bridge portion, and the first electrode unit and the second electrode unit are electrically insulated. At least one of the first electrode unit and the second electrode unit may extend a second ESD unit corresponding to the first ESD unit, and the first single ESD unit It may be covered by an insulating layer, and the second ESD unit may be disposed on the insulating layer. The first ESD unit and the second ESD unit located on the upper and lower sides of the insulating layer can guide and discharge static electricity accumulated in the electrode unit.

An embodiment of the present invention provides a touch structure including a bridge portion, a first Electrostatic Discharge (ESD) unit, an insulating layer, two first electrode units, and two second electrode units. The bridge portion is disposed on the substrate. The first ESD unit is disposed on the substrate, and the first ESD unit has at least one first protruding portion. The insulating layer is disposed on the substrate, and has a first through hole and a second through hole corresponding to the bridge portion, wherein the bridge portion and the first ESD unit are located on the same side of the insulating layer. The two first electrode units are disposed on the substrate along the first direction and are located on one side of the insulating layer facing away from the bridge portion, and the two first electrode units are electrically connected to each other through the connection portion. The two second electrode units are disposed on the substrate along the second direction and are located on one side of the insulating layer facing away from the bridge portion. The first direction is different from the second direction. The two second electrode units are electrically connected to the bridge portion through the first through hole and the second through hole, respectively. At least one of the two first electrode units and the two second electrode units extend to correspond to the first ESD unit. A second ESD unit, and the second ESD unit has at least a second protruding portion.

In some embodiments, the first protruding portion and the second protruding portion are disposed facing each other.

In some embodiments, the vertical projection of the first protruding portion on the substrate and the vertical projection of the second protruding portion on the substrate at least partially overlap.

In some embodiments, the vertical projection of at least one of the first protruding portion and the second protruding portion on the substrate is sawtooth-shaped.

In some embodiments, two first electrode units and two first electrode units The two-electrode unit has a plurality of unit grids, and each unit grid has a size of X units * Y units and has a first side and a second side that intersect. The second ESD unit is disposed on the first side of one of the plurality of cell grids, and the minimum distance between the vertical projection of the first protrusion on the substrate and the vertical projection of the second protrusion on the substrate is L1, where the first The length of both sides is X, and L1 <X.

In some embodiments, L1 <(X / 2).

In some embodiments, the two first electrode units and the two second electrode units each have a plurality of unit grids, and the vertical projection of the first ESD unit on the substrate is located in one of the unit grids perpendicular to the substrate. Within the projected outline.

In some embodiments, the vertical projection of the first ESD unit and the second ESD unit on the substrate is located within the outline of the same unit grid on the vertical projection of the substrate.

In some embodiments, the vertical projection of the first ESD unit on the substrate is located between the vertical projection of one of the two first electrode units on the substrate and the vertical projection of one of the two second electrode units on the substrate.

In some embodiments, the thickness of the bridge portion is substantially the same as the thickness of the first ESD unit.

In some embodiments, the touch structure further includes a first electrode series, a pair of sensing pads, and a driving element. The first electrode series extends in a first direction and has two first electrode units. A pair of sensing pads are respectively disposed at opposite ends of the first electrode series, and are electrically connected to the first electrode series. The driving element is electrically connected to at least one of the sensing pad and the second electrode unit, and is configured to provide an electrical signal to the first electrode series through the sensing pad and receive the signal from the second electrode unit. Electrical signals.

In some embodiments, the first ESD unit has at least two first protruding portions, and the protruding directions of the at least two first protruding portions are relative to each other.

In some embodiments, each of the first electrode unit and the second electrode unit has a plurality of unit grids, and a first ESD having at least two first protrusions exists in a plan profile of one of the unit grids. A unit and at least two second ESD units, and a first ESD unit having at least two first protrusions is located between the at least two second ESD units.

In some embodiments, the bridge portion is located between the insulating layer and the substrate.

In some embodiments, two first electrode units and two second electrode units are located between the insulating layer and the substrate.

An embodiment of the present invention provides a touch structure including a bridge portion, a first ESD unit, an insulating layer, two first electrode units, and two second electrode units. The bridge portion is disposed on the substrate. The first ESD unit is disposed on the substrate and has at least one first protruding portion. The insulating portion is disposed on the bridge portion and the first ESD unit. The two first electrode units are disposed on the substrate along the first direction, and the two first electrode units are electrically connected to each other through a connecting portion, wherein the connecting portion is located on the bridge portion and the insulating portion. The two second electrode units are disposed on the substrate along the second direction, and the two second electrode units are located on opposite sides of the connection portion, wherein the first direction is different from the second direction. The two second electrode units are electrically connected to each other through the bridge portion, wherein at least one of the two first electrode units and the two second electrode units extends out of at least one second ESD unit corresponding to the first ESD unit, The at least one second ESD unit has at least one second protruding portion.

100A, 100B, 100C, 100D‧‧‧touch structure

102‧‧‧ substrate

104‧‧‧First electrode series

106‧‧‧Second electrode series

108, 108A, 108B‧‧‧ sensor pads

110‧‧‧Drive element

112, 112A, 112B‧‧‧ First electrode unit

113‧‧‧Connection Department

114, 114A, 114B‧‧‧Second electrode unit

116‧‧‧Bridge Department

118, 118 ’, 118A, 118B‧‧‧ the first ESD unit

120, 120A, 120B ‧‧‧ the first protrusion

122‧‧‧ Insulation

123‧‧‧Insulation Department

124‧‧‧The first through hole

126‧‧‧Second through hole

128, 128A, 128B‧‧‧Second ESD Unit

130, 130A, 130B‧‧‧Second protrusion

132, 132A, 132B ‧‧‧ cell grid

134‧‧‧first side

136‧‧‧Second side

Areas B, C, F‧‧‧

D-D ’, E-E’, G-G’‧‧‧ line segments

D1‧‧‧ first direction

D2‧‧‧ Second direction

H1, H2‧‧‧ height

L1, L2‧‧‧ distance

S1‧‧‧First convex surface

S2‧‧‧Second convex surface

W1, W2‧‧‧Width

X, Y‧‧‧ length

FIG. 1A is a schematic top view illustrating a touch structure according to a first embodiment of the present disclosure.

FIG. 1B is an enlarged schematic view of a region B in FIG. 1A.

FIG. 1C is an enlarged schematic view of the area C in FIG. 1B.

Fig. 1D is a schematic cross-sectional view of a line segment D-D 'in Fig. 1B.

Fig. 1E is a schematic cross-sectional view of a line segment E-E 'in Fig. 1B.

FIG. 2A is a schematic top view illustrating a touch structure according to a second embodiment of the present disclosure.

FIG. 2B is an enlarged schematic diagram of the first ESD unit and the second ESD unit in the area F in FIG. 2A.

Fig. 2C is a schematic cross-sectional view of the line segment G-G 'in Fig. 2A.

FIG. 3A is a schematic cross-sectional view illustrating an arrangement relationship between a bridge portion of a touch structure and a second electrode unit according to a third embodiment of the present disclosure.

FIG. 3B is a schematic cross-sectional view illustrating an arrangement relationship between a bridge portion of a touch structure and a first electrode unit according to a fourth embodiment of the disclosure.

FIG. 4A is a schematic top view illustrating a configuration relationship between a first ESD unit and a second ESD unit according to a fifth embodiment of the present disclosure.

FIG. 4B is a schematic top view illustrating a configuration relationship between a first ESD unit and a second ESD unit according to a sixth embodiment of the present disclosure.

In the following, a plurality of embodiments of the present invention will be disclosed graphically. For the sake of clarity, many practical details will be described in the following description. It should be understood, however, that these practical details should not be used to limit the invention. That is, in some embodiments of the present invention, these practical details are unnecessary. In addition, in order to simplify the drawings, some conventional structures and components will be shown in the drawings in a simple and schematic manner.

In this article, the terms first, second, third, etc. are used to describe various elements, components, regions, and layers that can be understood. However, these elements, components, regions, and layers should not be limited by these terms. These words are limited to identifying single elements, components, areas, or layers. Therefore, a first element, component, region, or layer in the following can also be referred to as a second element, component, region, or layer without departing from the intention of the present invention.

In the drawings, the thicknesses of layers, films, panels, regions, etc. are exaggerated for clarity. Throughout the description, the same reference numerals denote the same elements. It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or Intermediate elements may also be present. In contrast, when an element is referred to as being "directly on" or "directly connected to" another element, there are no intervening elements present. As used herein, "connected" may refer to a physical and / or electrical connection.

As used herein, "about", "approximately" or "substantially" includes the stated value and the average value within an acceptable deviation range of a particular value determined by one of ordinary skill in the art, taking into account the measurements and A specific number of measurement-related errors (ie, limitations of the measurement system). For example, "about" can be expressed in the stated value Within one or more standard deviations, or within ± 30%, ± 20%, ± 10%, ± 5%.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted to have meanings consistent with their meanings in the context of the related art and the present invention, and will not be interpreted as idealized or excessive Formal meaning unless explicitly defined as such in this article.

Please see FIG. 1A first, where FIG. 1A is a schematic top view illustrating a touch structure 100A according to the first embodiment of the present disclosure. For the convenience of explanation, the horizontal direction in FIG. 1A is defined as the first direction D1, and the vertical direction in FIG. 1A is defined as the second direction D2, that is, the first direction D1 is different from the second direction D2. The second direction D2 is orthogonal (or referred to as substantially vertical), but is not limited thereto. The touch structure 100A includes a plurality of first electrode series 104, a plurality of second electrode series 106, a plurality of pairs of sensing pads 108, and a driving element 110.

The first electrode series 104 is disposed on the substrate 102 and extends substantially along a predetermined direction (for example, the first direction D1), and each first electrode series 104 has a plurality of first electrode series 104 disposed substantially along the first direction D1. One electrode unit 112. The second electrode series 106 is disposed on the substrate 102 and extends substantially along other predetermined directions (for example, the second direction D2). Each second electrode series 106 has a plurality of second electrodes arranged along the second direction D2. Electrode unit 114. At least one of the first electrode unit 112 of each of the first electrode series 104 and the second electrode unit 114 of each of the second electrode series 106 may be a mesh structure formed through a metal wire, but is not limited thereto. In other embodiments, the first electrode unit 112 and the second electrode unit 114 are One of them can be other structures, for example, the block electrode can be selected to include or not include a slit.

The first electrode unit 112 and the second electrode unit 114 may be formed of the same film layer, for example, the same conductive layer (for example, the same metal layer and / or alloy layer), but is not limited thereto. In other embodiments, the first electrode unit 112 and the second electrode unit 114 may be formed from different film layers. In each first electrode series 104, a plurality of first electrode units 112 are electrically connected. In each of the second electrode series 106, a plurality of second electrode units 114 are electrically connected, and the touch structure 100A may further include a bridge portion (not shown in FIG. 1A) to connect adjacent ones. The second electrode unit 114 will be described later. In addition, the first electrode unit 112 of each first electrode series 104 and the second electrode unit 114 of each second electrode series 106 may be separated by an insulating feature, that is, the first electrode unit 112 of each first electrode series 104 It is separated from the second electrode unit 114 of each second electrode series 106, and the insulation feature is, for example, an insulation layer (not shown in FIG. 1A). This part will be described later.

Multiple pairs of sensing pads (or connection pads) 108 are disposed on the substrate 102 and opposite ends of each first electrode series 104, and are electrically connected to the corresponding first electrode series 104. For example, a sensing pad 108A and 108B are respectively disposed at opposite ends of the first electrode series 104. The driving element 110 is electrically connected to the sensing pad 108 and one of the second electrode units 114 in each of the second electrode series 106. The driving element 110 can be used to provide an electrical signal to the first electrode unit 112 of the first electrode series 104 through the sensing pad 108 and receive an electrical signal from the second electrode unit 114 of the second electrode series 106. That is, in this embodiment, the first electrode unit 112 of the first electrode series 104 can be regarded as a transmitting electrode. (Tx), and the second electrode unit 114 of the second electrode series 106 can be regarded as a receiving electrode (Rx), and the touch structure 100A can generate capacitance by coupling the transmitting electrode (Tx) and the receiving electrode (Rx) to each other As a basis for touch judgment.

Please see Figure 1B, Figure 1C, Figure 1D, and Figure 1E. Figure 1B shows an enlarged schematic diagram of area B in Figure 1A, and Figure 1C shows the area in Figure C of Figure 1B. The schematic diagram is enlarged. FIG. 1D is a schematic cross-sectional view of the line segment DD ′ in FIG. 1B, and FIG. 1E is a schematic cross-sectional view of the line segment EE ′ in FIG. 1B. The touch structure 100A may further include a first electrostatic discharge (ESD) unit 118 and an insulating layer 122 (see FIG. 1D or FIG. 1E).

As shown in FIG. 1B, in the first electrode series 104 (see FIG. 1A), the adjacent first electrode units 112A and 112B can be electrically connected to each other through the connecting portion 113. The electrode units 112A and 112B and the connection portion 113 may be formed of the same film layer, for example, the same conductive layer (for example, the same metal layer and / or alloy layer), but is not limited thereto. In addition, the second electrode units 114A and 114B are located on opposite sides of the connection portion 113.

On the other hand, as shown in FIG. 1B and FIG. 1C, the first electrode units 112A and 112B and the second electrode units 114A and 114B respectively have a plurality of unit grids 132. For example, a single electrode unit may have a plurality of unit grids.格 132。 Grid 132. The size of each unit grid 132 may be X units * Y units, and has an intersecting first side 134 and a second side 136, wherein the length of the first side 134 is a length Y and the length of the second side 136 is a length X . For example, the size of each unit grid 132 may be about 30 micrometers by 30 micrometers, but is not limited thereto.

As shown in FIG. 1D and FIG. 1E, the bridge portion 116 and the first ESD The unit 118 is disposed on the substrate 102. The bridge portion 116 and the first ESD unit 118 may be formed of the same film layer, for example, the same conductive layer (for example, the same metal layer and / or alloy layer), but is not limited thereto. The thickness of the bridge portion 116 and the thickness of the first ESD unit 118 may be substantially the same, but is not limited thereto. On the other hand, the bridge portion 116, the first ESD unit 118, and the sensing pad 108 (see FIG. 1A) may be formed from the same film layer, but is not limited thereto.

The insulating layer 122 is disposed on the bridge portion 116 and the first ESD unit 118. The first ESD unit 118 may be covered by the insulating layer 122. In this embodiment, if the bottom surface of the insulating layer 122 is used as one side and the top surface is used as the other side facing away from the bottom surface of the insulating layer 122, the bridge portion 116 and the first ESD unit 118 are both located on the bottom surface of the insulating layer 122. In other words, the bridge portion 116 and the first ESD unit 118 are both located on the same side of the insulating layer 122. In addition, the insulating layer 122 has a first through hole 124 and a second through hole 126 provided corresponding to the bridge portion 116. For example, the vertical projection of the bridge portion 116 on the substrate 102 overlaps the vertical projection of the first through hole 124 and the second through hole 126 on the substrate 102.

The first electrode units 112A and 112B (see FIG. 1B) and the second electrode units 114A and 114B are disposed on the insulating layer 122. In this embodiment, the first electrode units 112A and 112B (see FIG. 1B) and the second electrode units 114A and 114B are located on the top surface of the insulating layer 122, that is, the first electrode units 112A and 112B (see 1B) and the second electrode units 114A and 114B are located on one side of the insulating layer 122 facing away from the bridge portion 116. The first electrode units 112A and 112B (see FIG. 1B) can be electrically insulated from the bridge portion 116 through the insulating layer 122. For example, the vertical projection of the connection portion 113 on the substrate 102 for connecting two adjacent first electrode units 112A and 112B (see FIG. 1B) is It will overlap with the vertical projection of the bridge portion 116 on the substrate 102. However, since the connection portion 113 can be separated from the bridge portion 116 through the insulating layer 122, the first electrode units 112A and 112B (see FIG. 1B) will interact with The bridge portion 116 is electrically insulated. The second electrode units 114A and 114B may be electrically connected to the bridge portion 116 through the first through hole 124 and the second through hole 126, respectively, so that adjacent second electrode units 114A and 114B may be electrically connected to each other.

Please return to FIG. 1B and FIG. 1C again. The first ESD unit 118 covered by the insulating layer 122 may have a first protruding portion 120. The vertical projection of the first protruding portion 120 on the substrate 102 may be zigzag and have a tip (or vertex). For example, the shape of the first protrusion 120 of the first ESD unit 118 may be, for example, composed of a single or multiple triangles, and each triangle may have a height H1 and a width W1. In some embodiments, the The relationship may be about 3 microns ≦ h1 ≦ 7 microns, and may be about 7 microns ≦ width W1 ≦ 13 microns, but is not limited thereto.

At least one of the first electrode units 112A and 112B and the second electrode units 114A and 114B may extend out of the second ESD unit 128, wherein the second ESD unit 128 has a second protruding portion 130. In this embodiment, the first electrode units 112A and 112B and the second electrode units 114A and 114B can be extended with the second ESD unit 128 as an example, but it is not limited thereto. Similar to the first ESD unit 118, the vertical projection of the second protruding portion 130 on the substrate 102 may be jagged and have a tip (or vertex). For example, the shape of the second protruding portion 130 of the second ESD unit 128 may be, for example, a single or multiple triangles, and each triangle may have a height H2 and a width W2. In some embodiments, The relationship may be approximately 3 microns ≦ h2 ≦ 7 microns, and approximately 7 microns ≦ width W2 ≦ 13 microns.

The positions of the first ESD unit 118 and the extended second ESD unit 128 correspond to each other. For example, the first ESD unit 118 and the second ESD unit 128 are arranged in pairs. In addition, in addition to the position corresponding to the second ESD unit 128, the setting position of the first ESD unit 118 may also correspond to the unit grid 132. For example, in this embodiment, the vertical projection of the first ESD unit 118 on the substrate 102 is located within the outline of the vertical projection of the unit grid 132 on the substrate 102. In some embodiments, the first ESD cell 118 is separated from its corresponding cell grid 132. In the embodiment where the setting position of the first ESD unit 118 corresponds to the unit grid 132, the first ESD unit 118 and the second ESD unit 128 may correspond to the same unit grid 132, for example, the first ESD unit 118 and the second ESD unit The vertical projection of 128 on the substrate 102 may be located within the contour of the same unit grid 132 on the vertical projection of the substrate 102. For example, taking the area C as an example, the first ESD unit 118 is disposed on the unit grid 132, and the second ESD unit 128 is disposed on the first side 134 of the same unit grid 132.

Alternatively, the setting position of the first ESD unit 118 may also correspond to the first electrode unit 112A or 112B, or the second electrode unit 114A or 114B. For example, the vertical projection of the first ESD unit 118 'on the substrate 102 is between the vertical projection of the first electrode unit 112A or 112B on the substrate 102 and the vertical projection of the second electrode unit 114A or 114B on the substrate 102.

Among the paired first ESD unit 118 and second ESD unit 128, the first protruding portion 120 of the first ESD unit 118 and the second protruding portion 130 of the second ESD unit 128 may be disposed facing each other, or That is, when the first ESD unit 118 and the second ESD unit 128 are viewed in a direction perpendicular to the substrate 102, they will each have a first convex surface S1 and a second convex surface S2 facing each other, as shown in FIG. 1C. Show. In addition, the first ESD unit 118 and the second ESD unit 128 may be disposed in line symmetry, as shown in FIG. 1C.

In addition, as shown in FIG. 1C and FIG. 1E, the vertical projection of the first protrusion 120 of the first ESD unit 118 on the substrate 102 and the second protrusion 130 of the second ESD unit 128 on the substrate 102 The minimum distance of the vertical projection of is the distance (or interval) L1, and the distance L1 is less than the length X of the second side 136 of the cell grid 132, that is, L1 <X. In some embodiments, the distance may be about 3 μm ≦ distance L1 ≦ 7 μm, but is not limited thereto.

Through the above configuration, an insulating layer 122 is sandwiched between the first ESD unit 118 and the second ESD unit 128. For example, the covered first ESD unit 118 (for example, the first ESD unit 118 is disposed under the bottom of the insulating layer 122). ) And the second ESD unit 128 (for example, the second ESD unit 128 is disposed on the top surface of the insulating layer 122) disposed on the insulating layer 122 can generate a tip through its first protruding portion 120 and the second protruding portion 130, respectively. Discharge to guide and release the static electricity accumulated in the first electrode unit 112A or 112B or the second electrode unit 114A or 114B. In other words, when the first electrode unit 112A or 112B or the second electrode unit 114A or 114B has a state of static electricity accumulation, it can use the second ESD unit 128 to guide the static electricity accumulated therein to Release towards the first ESD unit 118. Next, in the process of discharging static electricity, since the first ESD unit 118 is an independent structure, and the second ESD unit 128 is a structure in which the electrode unit protrudes from the edge of the grid line, even the first ESD unit 118 or the second ESD The unit 128 is injured due to the discharge of static electricity, and the electrode series (such as the first electrode series 104 or the second electrode series 106 in FIG. 1A) will not be disconnected due to this. That is, even if the first ESD unit 118 or the second ESD unit 128 is injured due to the discharge of static electricity, the touch The structure 100A can still provide touch functions. Therefore, the first ESD unit 118 or the second ESD unit 128 can provide the electrostatic protection effect of the touch structure 100A.

According to the above, the first ESD unit 118 and the second ESD unit 128 are used to guide and discharge static electricity accumulated in the electrode unit. In this regard, those having ordinary knowledge in the technical field to which the present invention pertains may adjust the shape of the vertical projection of the first ESD unit 118 and the second ESD unit 128 on the substrate 102 or the distance therebetween according to actual needs. For example, although the shape of the first projection 120 of the first ESD unit 118 and the second projection 130 of the second ESD unit 128 perpendicular to the substrate 102 in this embodiment are formed by a plurality of triangles, In other embodiments, the shape in which the first protruding portion 120 and the second protruding portion 130 are perpendicularly projected onto the substrate 102 may be other shapes. Alternatively, the distance between the first ESD unit 118 and the second ESD unit 128 may be adjusted. For example, the distance L1 between the first ESD unit 118 and the second ESD unit 128 may be reduced, so that the distance L1 may be smaller than the unit Half the length X of the second side 136 of the mesh 132, that is, L1 <(X / 2).

Please see FIG. 2A, FIG. 2B, and FIG. 2C again. FIG. 2A is a schematic top view illustrating the touch structure 100B according to the second embodiment of the present disclosure, and FIG. 2B illustrates the area of FIG. 2A. An enlarged schematic diagram of the first ESD unit 118 and the second ESD unit 128 in F, and FIG. 2C is a schematic cross-sectional view of the line segment GG ′ in FIG. 2A. At least one difference between this embodiment and the first embodiment is that the first ESD unit 118 and the second ESD unit 128 overlap each other when viewed in a direction perpendicular to the substrate 102. For example, the vertical projection of the first protrusion 120 of the first ESD unit 118 on the substrate 102 and the vertical projection of the second protrusion 130 of the second ESD unit 128 on the substrate 102 at least partially overlap.

As shown in FIG. 2A and FIG. 2B, the first protruding portion 120 of the first ESD unit 118 and the second protruding portion 130 of the second ESD unit 128 are convex in different directions (or called protruding directions are different) Direction). For example, when the first protruding portion 120 and the second protruding portion 130 are viewed in a direction perpendicular to the substrate 102, they may have a first protruding surface S1 and a second protruding surface S2 facing in opposite directions, respectively. As shown in FIG. 2B and FIG. 2C, when the first ESD unit 118 and the second ESD unit 128 are viewed in a direction perpendicular to the substrate 102, the maximum length of the overlapping portion can be marked as the distance L2, for example, the relationship is about 1 micron ≦ Distance L2 ≦ 3 μm. In this configuration, the first ESD unit 118 and the second ESD unit 128 can still be used to guide and discharge static electricity accumulated in the electrode unit. It can be known from the 2C that the first ESD unit 118 covered by the insulating layer 122 (for example, the first ESD unit 118 is disposed under the insulating layer 122) and the second ESD unit 128 (for example: the second ESD) provided on the insulating layer 122 The unit 128 is disposed on the top surface of the insulating layer 122), and the tip discharge can be generated through the first protruding portion 120 and the second protruding portion 130, respectively, to guide and release the accumulated in the first electrode unit 112A or 112B or the second electrode unit Static electricity in the electrode unit 114A or 114B.

In this embodiment, although the first protruding portion 120 of the first ESD unit 118 and the second protruding portion 130 of the second ESD unit 128 are convex in different directions, those with ordinary knowledge in the technical field to which the present invention belongs, Can be adjusted according to actual needs. For example, in other embodiments, the first protruding portion 120 of the first ESD unit 118 and the second protruding portion 130 of the second ESD unit 128 may protrude in the same direction, that is, the first protruding surfaces they have respectively. S1 and the second protruding surface S2 may face the same direction. In addition, in the touch structure 100B, a portion of the plurality of first ESD units 118 and a plurality of second ESD units 128 may correspond to each other. The second ESD unit 128 and the second ESD unit 128 are partially overlapped. For example, in FIG. 2A, a part of the plurality of first ESD units 118A and the plurality of second ESD units 128A are arranged in such a manner that their vertical projections on the substrate 102 partially overlap, and the first ESD unit 118B and the first The other part of the two ESD units 128B is configured in such a manner that their vertical projections on the substrate 102 do not overlap.

In addition to the configuration method mentioned in the foregoing embodiment, the configuration relationship between the bridge portion 116 and the electrode unit may also have other changes, which will be described below by way of example.

Please see FIG. 3A, which is a schematic cross-sectional view illustrating a configuration relationship between the bridge portion 116 of the touch structure 100C and the second electrode units 114A and 114B according to the third embodiment of the present disclosure. The position of the section in Fig. 3A can be regarded as the same as that in Fig. 1D. At least one difference between this embodiment and the foregoing embodiments is that a conductive layer (for example, a metal layer or an alloy layer) forming the second electrode unit 114 is located between the substrate 102 and the insulating layer 122, and the bridge portion 116 and the first portion are formed. The conductive layer of an ESD unit 118 is located on the insulating layer 122. For the remaining description, reference may be made to the foregoing embodiment, and details are not described herein again.

In FIG. 3A, the second electrode units 114A and 114B arranged in the same direction can be electrically connected to the bridge portion 116 through the first through hole 124 and the second through hole 126 of the insulating layer 122, respectively, and arranged in the other direction. The first electrode unit (not shown) is electrically connected through the connection portion 113. Through this configuration, the first ESD unit 118 can still generate a discharge effect with the second ESD unit (not shown in FIG. 3A) of the electrode unit, thereby achieving the effect of electrostatic protection. In addition, the position of the first ESD unit 118 shown in FIG. 3A is only an example, and is described in other embodiments. In the formula, the first ESD unit 118 may be located elsewhere on the insulating layer 122.

Please refer to FIG. 3B again. FIG. 3B is a schematic cross-sectional view illustrating a configuration relationship between the bridge portion 116 of the touch structure 100D and the first electrode units 112A and 112B according to the fourth embodiment of the present disclosure. At least one point of difference between this embodiment and the foregoing embodiment is that the insulation features of this embodiment are provided at locations corresponding to the bridge portion 116 and the first ESD unit (not shown in FIG. 3B). For the remaining description, reference may be made to the foregoing embodiment, and details are not described herein again.

In FIG. 3B, the first electrode units 112A and 112B arranged in the same direction can be electrically connected through the connecting portion 113, and the second electrode units (not shown in FIG. 3B) arranged in the other direction are transmitted through The bridge portion 116 covered by the insulation portion 123 is electrically connected. The first ESD unit (not shown in FIG. 3B) can be correspondingly arranged in a grid of the first electrode units 112A and 112B and the second electrode unit (not shown in FIG. 3B), and is covered by the insulating portion 123 . In some embodiments, the insulating portion 123 only covers the bridge portion 116, the first ESD unit (not shown in FIG. 3B), and the inner surface of the substrate 102, but is not limited thereto. The first ESD unit can still generate a discharge effect with the second ESD unit on the electrode unit, thereby achieving the effect of electrostatic protection. In this embodiment, the bridging portion 116 and the first ESD unit (not shown in FIG. 3B) may be formed through the same conductive layer first, and correspond to the formed bridging portion 116 and the first ESD unit (not shown in FIG. 3B). (FIG.) An insulating portion 123 is provided, and then the first electrode units 112A and 112B and the second electrode unit are formed through another same conductive layer (not shown in FIG. 3B).

In the configuration relationship between the first ESD unit and the second ESD unit, in addition to the configuration method mentioned in the previous embodiment, the configuration relationship between the first ESD unit and the second ESD unit may also have other changes. for example Bright.

Please refer to FIG. 4A, where FIG. 4A is a schematic top view illustrating a configuration relationship between the first ESD unit 118 and the second ESD unit 128 according to the fifth embodiment of the present disclosure. At least one difference between this embodiment and the first embodiment is that when the first ESD unit 118 and the second ESD unit 128 are viewed in the direction of the vertical substrate 102, they can be located in adjacent unit grids 132A and 132B, respectively. In addition, the first protruding portion 120 of the first ESD unit 118 and the second protruding portion 130 of the second ESD unit 128 may be convex in the same direction. In this regard, the first protruding portion 120 of the first ESD unit 118 and the second protruding portion 130 of the second ESD unit 128 may be designed to be close to each other so that the distance therebetween is sufficient for the first protruding portion 120 and The second protrusions 130 discharge each other. In addition, in the embodiment where the first protruding portion 120 of the first ESD unit 118 and the second protruding portion 130 of the second ESD unit 128 protrude in the same direction, when viewed from the direction of the vertical substrate 102, the second ESD unit The second protruding portion 130 of 128 may also overlap the circuit portion of the corresponding electrode unit.

Please see FIG. 4B again, where FIG. 4B is a schematic top view illustrating a configuration relationship of the first ESD unit 118 and the second ESD unit 128 according to the sixth embodiment of the present disclosure. At least one difference between this embodiment and the first embodiment is that the first ESD unit 118 has at least two first protrusions 120A and 120B, and the first protrusions 120A and 120B protrude toward the first ESD unit 118. On opposite sides, in addition, when viewed from the direction of the vertical substrate 102, the number of second ESD cells 128 in the same cell grid 132 is at least two, and the protrusions of the two second ESD 128 (for example: 130A, 130B) Corresponds to the first protrusions 120A and 120B, respectively. For example, in Figure 4B, the second to the upper left The ESD unit 128 and the second ESD unit 128 that is biased to the lower right in FIG. 4B are located on opposite sides of the same unit grid 132. The protrusions (for example, 130A, 130B) of the two second ESD units 128 are convex The outgoing directions are different directions, and the protruding directions of the first protruding portions 120A and 120B corresponding to the two second ESD units 128 are also different directions. In other embodiments, the two second ESD units 128 may also be located on two adjacent sides of the same cell grid 132. The protruding directions (eg, 130A, 130B) of the two second ESD units 128 are in the protruding direction system. Different directions, and the protruding directions of the first protruding portions 120A and 120B corresponding to the two second ESD units 128 are also different directions. In another embodiment, the two second ESD units 128 may also be located on the same side of the same unit grid 132. The protruding directions (for example, 130A, 130B) of the two second ESD units 128 are substantially the same. The directions are the same, and the protruding directions of the first protruding portions 120A and 120B corresponding to the two second ESD units 128 are also substantially the same.

In the above embodiments, different ESD unit configurations can be applied to the same touch structure. For example, in some embodiments, the ESD unit configuration relationship in the touch structure may include the ESD unit configuration relationship mentioned in the first to sixth embodiments.

In summary, the touch structure of the present invention includes a bridge portion, a first ESD unit, an insulating layer, a first electrode unit, and a second electrode unit. Adjacent first electrode units can be electrically connected through the connection portion, adjacent second electrode units can be electrically connected through the bridge portion, and the first electrode unit and the second electrode unit are electrically insulated. At least one of the first electrode unit and the second electrode unit may have a second ESD unit, and the first single ESD unit may be covered by an insulating layer, and the second ESD unit may be disposed on the insulating layer. Through the first ESD on the upper and lower sides of the insulation The unit and the second ESD unit can guide and discharge the static electricity accumulated in the electrode unit. On the other hand, even if the first ESD unit or the second ESD unit is injured due to the discharge of static electricity, the electrode unit will not be disconnected due to this, so that the touch structure can stably provide the touch function.

Although the present invention has been disclosed in various embodiments as above, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and retouches without departing from the spirit and scope of the present invention. The scope of protection shall be determined by the scope of the attached patent application.

Claims (16)

A touch structure includes: a bridge portion disposed on a substrate; a first Electrostatic Discharge (ESD) unit disposed on the substrate; the first ESD unit having at least one first protruding portion; An insulating layer is disposed on the substrate and has a first through hole and a second through hole corresponding to the bridge portion, wherein the bridge portion and the first ESD unit are located on the same side of the insulating layer; two A first electrode unit disposed on the substrate along a first direction and located on one side of the insulating layer facing away from the bridge portion, and the two first electrode units are electrically connected to each other through a connection portion; The electrode unit is disposed on the substrate along a second direction and is located on one side of the insulating layer facing away from the bridge portion. The two second electrode units are located on opposite sides of the connection portion, and the first direction is different from the first direction. Two directions, wherein the two second electrode units are electrically connected to the bridge portion through the first through hole and the second through hole, respectively, wherein at least one of the two first electrode units and the two second electrode units Extended to correspond to the first ESD The unit has at least one second ESD unit, and the at least one second ESD unit has at least one second protruding portion. The touch control structure according to item 1 of the scope of the patent application, wherein the at least one first protruding portion and the at least one second protruding portion are disposed facing each other. According to the touch control structure described in item 1 of the patent application scope, a vertical projection of the at least one first protruding portion on the substrate and a vertical projection of the at least one second protruding portion on the substrate at least partially overlap. The touch control structure according to item 1 of the scope of the patent application, wherein at least one of the at least one first protruding portion and the at least one second protruding portion is sawtooth-shaped in a vertical projection on the substrate. According to the touch structure described in the first item of the patent application scope, wherein the two first electrode units and the two second electrode units each have a plurality of cell grids, and the size of each of the cell grids is X units * Y The unit has an intersecting first side and a second side, the at least one second ESD cell is disposed on the first side of one of the cell grids, and the at least one first protruding portion is on the The minimum distance between the vertical projection of the substrate and the vertical projection of the at least one second protrusion on the substrate is L1, wherein the length of the second side is X, and L1 <X. The touch control structure described in item 5 of the patent application scope, wherein L1 <(X / 2). The touch structure according to item 1 of the scope of the patent application, wherein the two first electrode units and the two second electrode units each have a plurality of cell grids, and a vertical projection of the first ESD unit on the substrate is located at the One of the cell grids is within the outline of the substrate's vertical projection. The touch structure according to item 7 in the scope of the patent application, wherein the vertical projection of the first ESD unit and the at least one second ESD unit on the substrate are located within the outline of the same vertical projection of the unit grid on the substrate. The touch structure according to item 1 of the patent application scope, wherein a vertical projection of the first ESD unit on the substrate is located in a vertical projection of one of the two first electrode units on the substrate and the two second electrode units One of them is between the vertical projections of the substrate. The touch-control structure according to item 1 of the scope of the patent application, wherein the thickness of the bridge portion is substantially the same as the thickness of the first ESD unit. The touch control structure described in item 1 of the patent application scope further includes: a first electrode series extending in the first direction and having the two first electrode units; a pair of sensing pads respectively disposed on the The opposite ends of the first electrode series are electrically connected to the first electrode series; and a driving element is electrically connected to at least one of the pair of sensing pads and the two second electrode units, and An electrical signal is provided to the first electrode series through the pair of sensing pads, and an electrical signal is received from the two second electrode units. The touch structure according to item 1 of the scope of patent application, wherein the first ESD unit has the at least two first protrusions, and the protrusion directions of the at least two first protrusions are relative to each other. . The touch control structure according to item 12 of the scope of patent application, wherein the two first electrode units and the two second electrode units each have a plurality of cell grids, and one of the cell grids is in a top view contour. There is the first ESD unit having the at least two first protrusions and there is the at least two second ESD units, and the first ESD unit having the at least two first protrusions is located in the Between at least two second ESD units. The touch-control structure according to item 1 of the application, wherein the bridge portion is located between the insulating layer and the substrate. The touch-control structure according to item 1 of the scope of patent application, wherein the two first electrode units and the two second electrode units are located between the insulating layer and the substrate. A touch structure includes: a bridge portion disposed on a substrate; a first Electrostatic Discharge (ESD) unit disposed on the substrate; the first ESD unit having at least one first protruding portion; At least one insulating portion is disposed on the bridge portion and the first ESD unit; two first electrode units are disposed on the substrate along a first direction, and the two first electrode units are electrically connected to each other through a connecting portion. Connection, wherein the connection portion is located on the bridge portion and the insulation portion; and two second electrode units are disposed on the substrate along a second direction, the two second electrode units are located on opposite sides of the connection portion, and the The first direction is different from the second direction, wherein the two second electrode units are electrically connected to each other through the bridging portion, and at least one of the two first electrode units and the two second electrode units extend to correspond to the first direction. At least one second ESD unit of an ESD unit, the at least one second ESD unit has at least one second protrusion.